San Diego radio began in the early twenties. Some
of the earliest call letters of AM stations in the market by 1922 included KDPT,
KON, KYF, KDYO, KDYM, KFBC (which later became KGB), KFFA and KFVW (which later
became KFSD). Call letters, dial positions and ownership changed frequently
during radio's first few decades. By the early forties the AM dial became more
stable with key stations being KFSD (600), KGB (1360) and KFMB (1450).

One of the most legendary stations in San Diego radio history has been
KGB. In the sixties the 1360 dial position was occupied by "Boss Radio KGB,"
which was the top 40 format implemented by the consulting team of Bill Drake and
Gene Chenault. Ron Jacobs, who had programmed KHJ in Los Angeles at the launch
of "Boss Radio" in 1965, was the PD who oversaw the transition of KGB to
progressive rock in 1972 with a simulcast on KGB-FM (101.5). The station became
a legendary rocker and sold several times since the eighties, eventually winding
up in the hands of Clear Channel, who went on to own six other stations in the
market.

By the late eighties the top station in San Diego was
album-oriented rocker KGB, owned by Brown Broadcasting. Other top stations of
the era included contemporary hits simulcast combo KKLQ (600 AM and 106.5 FM),
owned by Edens, Jefferson-Pilot's country simulcast combo KSON (1240 AM and 97.3
FM), Group W's beautiful music station KJQY (103.7), Midwest TV's adult
contemporary station KFMB (760 AM), Gannett's news/talk station KSDO (1130 AM)
and alternative station XTRA (91X), owned by Noble Broadcasting.

91X was
born in 1978 as a rock station, owned by John Lynch of Noble Broadcasting. In
1983 the format switched to "rock of the eighties," consulted by Rick Carroll of KROQ in Los
Angeles. Within a year Max Tolkoff took over programming and the station began
to accelerate in the ratings. In 1987 Trip Reeb became PD and then left two
years later to be GM of KROQ. Kevin Stapleford then took over as PD of 91X and
Michael Halloran became MD. Bryan Jones did mornings off and on from 1984 to
1996 (Jones died of a heart attack at age 49 in November 2006).

During
the eighties and nineties 91X was one of the top-rated alternative stations in
America. Although Stapleford resigned in 1996, Halloran was promoted and gave
the station one more period of high numbers. Within a year Halloran was replaced
by Brian Schock, who was an original jock on the station. Part of the station's
successful sound of the Stapleford/Halloran era involved a mix of guitar-based
alternative music with many other flavors including classic rock sprinkled in.

With the signing of the Telecom Act of 1996, radio owners were allowed
to greatly expand the number of stations they could own in a market. The first
big player in San Diego was Jacor. Within a year of the new law, Jacor owned
eight stations in the market including contemporary/rhythmic station KHTS
(93.3), rocker KIOZ (105.3), classic rocker KGB (101.5), alternative rocker XTRA
(91X), talk station KGO (660), news/talk station KSDO (1130), big band station
KPOP (1360) and pop station KKLQ (106.5). After a series of mergers, ownership
went to Clear Channel in 2000.